However, the introduction of freeways (which other countries referred to as autoroutes, motorways and whatnot) further complicated matters by necessitating the use of the term at-grade expressway (see above).
However, as for cloverleaf interchanges between freeways, they are being unwound into partial stack interchanges or made safer with slip ramps as funds permit.
These state roads are either feeder roads that interconnect state highways together, or long entry/exit ramps to freeways (often called "connector roads").
For high-capacity multilane freeways (three or more lanes per direction), many motorists often pass on the inner lane, largely in response to misuse of the passing lane by slower traffic.
The category field indicates if the sections are "autopistas" (generally tolled freeways under a concession contract), "autovas" or simple single-lane roads.
